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//===-- TestAArch64Emulator.cpp ------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "gtest/gtest.h"
#include "lldb/Core/Address.h"
#include "lldb/Core/Disassembler.h"
#include "lldb/Target/ExecutionContext.h"
#include "lldb/Utility/ArchSpec.h"
#include "Plugins/Instruction/ARM64/EmulateInstructionARM64.h"
using namespace lldb;
using namespace lldb_private;
struct Arch64EmulatorTester : public EmulateInstructionARM64 {
Arch64EmulatorTester()
: EmulateInstructionARM64(ArchSpec("arm64-apple-ios")) {}
static uint64_t AddWithCarry(uint32_t N, uint64_t x, uint64_t y, bool carry_in,
EmulateInstructionARM64::ProcState &proc_state) {
return EmulateInstructionARM64::AddWithCarry(N, x, y, carry_in, proc_state);
}
};
class TestAArch64Emulator : public testing::Test {
public:
static void SetUpTestCase();
static void TearDownTestCase();
protected:
};
void TestAArch64Emulator::SetUpTestCase() {
EmulateInstructionARM64::Initialize();
}
void TestAArch64Emulator::TearDownTestCase() {
EmulateInstructionARM64::Terminate();
}
TEST_F(TestAArch64Emulator, TestOverflow) {
EmulateInstructionARM64::ProcState pstate;
memset(&pstate, 0, sizeof(pstate));
uint64_t ll_max = std::numeric_limits<int64_t>::max();
Arch64EmulatorTester emu;
ASSERT_EQ(emu.AddWithCarry(64, ll_max, 0, 0, pstate), ll_max);
ASSERT_EQ(pstate.V, 0ULL);
ASSERT_EQ(pstate.C, 0ULL);
ASSERT_EQ(emu.AddWithCarry(64, ll_max, 1, 0, pstate), (uint64_t)(ll_max + 1));
ASSERT_EQ(pstate.V, 1ULL);
ASSERT_EQ(pstate.C, 0ULL);
ASSERT_EQ(emu.AddWithCarry(64, ll_max, 0, 1, pstate), (uint64_t)(ll_max + 1));
ASSERT_EQ(pstate.V, 1ULL);
ASSERT_EQ(pstate.C, 0ULL);
}
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